| 摘要 |
To provide a completely novel piezoelectric ceramic having an alkali-containing niobate-based perovskite structure in which constituent elements are Li, Na, K, Nb, and O, wherein sintering can be readily performed at about 1000°C and wherein piezoelectric characteristics are not significantly reduced. A Li 3 NbO 4 crystal phase is intentionally deposited on a piezoelectric ceramic having an alkali-containing niobate-based perovskite structure in which constituent elements are Li, Na, K, Nb, and O, whereby sintering becomes possible at about 1000°C rather than at the normally required sintering temperature of 1050°C or greater. |
